Postal Codes

19720 ZIP Code

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ZIP code 19720 covers New Castle, Delaware, with a population of about 60,593 and a median household income of $75,985.

Population
60,5931,582 per square mile
Median age
39.71 points above the US average
Median household income
$75,9858% below the Delaware median
Poverty rate
10.1%2.3 points below the US average
Typical home value
$282,656up 21.7% in five years
Median rent
$1,282about the Delaware median
Degree or higher
21.6%13.4 points below the US average
Homeownership
67.2%2.2 points above the US average
Time zone
Eastern UTC-05:00observes daylight saving time
Businesses
1,540

Where 19720 is

New Castle, Delaware — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population60,593
Median age39.7
Family households64.9%
Born outside the US12.2%
Speaks a language other than English at home18%
White (non-Hispanic)34.8%
Black (non-Hispanic)41.8%
Asian (non-Hispanic)1.7%
Hispanic or Latino17.4%
Veterans6.7%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$75,985
Income per person$37,375
Poverty rate10.1%
Households on SNAP or cash assistance12%

Household income distribution

Under $10k3.8%
$10–15k3.0%
$15–20k2.6%
$20–25k1.9%
$25–30k2.6%
$30–35k4.5%
$35–40k4.2%
$40–45k4.7%
$45–50k3.3%
$50–60k9.5%
$60–75k9.4%
$75–100k13.7%
$100–125k11.8%
$125–150k8.3%
$150–200k9.6%
$200k or more7.1%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed29,640
Mean adjusted gross income$57,072
Returns declaring $200,000 or more2.2%
Returns, under $25k29.5%
Returns, $25k–$50k29.0%
Returns, $50k–$75k17.6%
Returns, $75k–$100k9.8%
Returns, $100k–$200k11.9%
Returns, $200k or more2.2%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$242,600
Median gross rent$1,282
Rent as a share of household income30%
Owner-occupied67.2%
Vacant homes4.8%
Median year built1971

What the homes are

Detached house59.3%
Attached house15.3%
2 to 4 units4.7%
5 to 19 units16.1%
20 or more units3.3%
Mobile home1.2%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$282,656as of 2026-07
Typical home value, 1 yeardown 0.2%
Typical home value, 5 yearsup 21.7%
Typical home value, 10 yearsup 69.5%
Typical asking rent$1,669as of 2026-07
Typical home value since 2000
200020132026$283,150$108,264

$108,264 in 2000 to $282,656 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate3.5%
Bachelor's degree or higher21.6%
High school diploma or higher89.2%
Works from home13.8%
Drives to work alone72.1%
Takes public transport2.6%
Commutes 45 minutes or more13.9%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity37.3% 3.9 pts above the national average of 33.4%
Diagnosed diabetes13.9% 1.9 pts above the national average of 12%
Currently smokes13.9% 0.7 pts above the national average of 13.2%
High blood pressure37.7% 3.6 pts above the national average of 34.1%
Fair or poor general health21.2% 0.9 pts above the national average of 20.3%
No health insurance (18–64)11.3% same as the national average of 11.3%
Depression20.9% 1 pts below the national average of 21.9%
No leisure-time physical activity29.9% 4.5 pts above the national average of 25.4%
Arthritis26% 0.9 pts above the national average of 25.1%
Binge drinking14.4% 1.6 pts below the national average of 16%
Taking blood pressure medication75.5% 0.8 pts above the national average of 74.7%
Cancer (non-skin)7% 0.7 pts below the national average of 7.7%
Current asthma11.2% 0.8 pts above the national average of 10.4%
Coronary heart disease6.1% same as the national average of 6.2%
Routine check-up in past year79.2% 2.5 pts above the national average of 76.7%
Cholesterol screening86.5% 0.6 pts above the national average of 85.9%
Cognitive disability15.1% same as the national average of 14.8%
Colorectal screening64% same as the national average of 64.3%
COPD6.7% same as the national average of 6.6%
Visited a dentist58.4% 2.9 pts below the national average of 61.3%
Any disability32% 1.3 pts above the national average of 30.7%
Lacks emotional support25.8% 1 pts above the national average of 24.8%
Food insecurity19.8% 2.7 pts above the national average of 17.1%
Received food stamps17% 2.7 pts above the national average of 14.3%
Hearing disability5.4% 1.3 pts below the national average of 6.7%
High cholesterol37.9% 1.7 pts above the national average of 36.2%
Housing insecurity16.8% 3 pts above the national average of 13.8%
Independent living disability8.9% 0.5 pts above the national average of 8.4%
Lacks transport10.5% 1.3 pts above the national average of 9.2%
Loneliness34.4% same as the national average of 34.4%
Mammography use78.4% 2.5 pts above the national average of 75.9%
Poor mental health (14+ days)17.1% same as the national average of 16.8%
Mobility disability15.6% 1.6 pts above the national average of 14%
Poor physical health (14+ days)13.7% same as the national average of 13.5%
Self-care disability4.3% same as the national average of 4%
Utility shut-off threat10.7% 1.9 pts above the national average of 8.8%
Sleeps under 7 hours39.2% 2.8 pts above the national average of 36.4%
Stroke3.8% same as the national average of 3.4%
All natural teeth lost14.3% 1.3 pts above the national average of 13%
Vision disability5.8% same as the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments1,540
People employed29,691
Annual payroll$1,798,657,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 46.7% of US census tracts
FEMA ratingVery Low to Relatively High across the 20 census tracts this ZIP code covers
Expected annual loss48.1 out of 100
Community resilience75.2 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Winter weather89.2Relatively High at its worst in this ZIP code
Coastal flooding81.8Relatively High at its worst in this ZIP code
Hurricane68.2Relatively Low at its worst in this ZIP code
Earthquake68.1Relatively Moderate at its worst in this ZIP code
Drought67.9Relatively Moderate at its worst in this ZIP code
River flooding59.5Very High at its worst in this ZIP code
Wildfire58.6Relatively Low at its worst in this ZIP code
Landslide57.1Very Low at its worst in this ZIP code
Ice storm56.6Relatively Moderate at its worst in this ZIP code
Cold wave56.5Relatively Moderate at its worst in this ZIP code
Heat wave54.4Relatively Moderate at its worst in this ZIP code
Strong wind44.3Relatively Moderate at its worst in this ZIP code
Tornado43.3Relatively Moderate at its worst in this ZIP code
Lightning30.7Relatively Low at its worst in this ZIP code
Hail14Very Low at its worst in this ZIP code
Compared with Delaware and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPDelawareUnited States
Median household income$75,985$82,855$78,538
Income per person$37,375$44,219$43,289
Poverty rate10.1%10.7%12.4%
Median home value$242,600$326,800$303,400
Median gross rent$1,282$1,341$1,348
Homeownership67.2%72.3%65%
Bachelor's degree or higher21.6%35.3%35%
Unemployment rate3.5%5.1%5.2%
Works from home13.8%13.3%13.5%
Born outside the US12.2%10.4%13.9%
Median age39.741.538.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationWILMINGTON NEW CASTLE CO AP, DE US9.9 km away
Rain in a year45 in
Snow in a year20 in

Average high and low by month

January41.4°F / 25.6°F3.23 in rain, 6.1 in snow
February44.1°F / 27°F2.83 in rain, 7.8 in snow
March52.5°F / 33.9°F4.16 in rain, 3.1 in snow
April64.2°F / 43.5°F3.51 in rain, 0.1 in snow
May73.5°F / 53.4°F3.57 in rain
June82.2°F / 63°F4.67 in rain
July86.8°F / 68.3°F4.41 in rain
August84.9°F / 66.6°F3.98 in rain
September78.5°F / 59.3°F4.38 in rain
October67°F / 47.3°F3.68 in rain
November55.9°F / 37.4°F3.06 in rain, 0.2 in snow
December46°F / 30.3°F3.85 in rain, 2.9 in snow
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarket16% of this ZIP code's area
Far from a supermarket65% of this ZIP code's area
No vehicle and far from a supermarket25% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

Colonial School District99% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability52more vulnerable than 52% of US census tracts
Socioeconomic status48more vulnerable than 48% of US census tracts
Household characteristics44more vulnerable than 44% of US census tracts
Racial and ethnic minority status64more vulnerable than 64% of US census tracts
Housing type and transport53more vulnerable than 53% of US census tracts
Walkability11.1 out of 20Above average
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

19701 Bear, DE2.8 km away
19708 Kirkwood, DE3.7 km away
19733 Saint Georges, DE4.2 km away
19706 Delaware City, DE5.3 km away
19712 Newark, DE5.6 km away
19714 Newark, DE5.6 km away
19715 Newark, DE5.6 km away
19718 Newark, DE5.6 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

New Castle County100% of this ZIP code's land area
Time zoneEastern (UTC-05:00 standard)
Daylight saving timeObserved
Land area38.3 sq mi
Water area3.08 sq mi
Population density1,582 people per sq mi
Latitude, longitude39.5929, -75.6515

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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